Drivers: hv: vmbus: Move hyperv_report_panic_msg to arch neutral code

With the new Hyper-V MSR set function, hyperv_report_panic_msg() can be
architecture neutral, so move it out from under arch/x86 and merge into
hv_kmsg_dump(). This move also avoids needing a separate implementation
under arch/arm64.

No functional change.

Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://lore.kernel.org/r/1614721102-2241-5-git-send-email-mikelley@microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>

1 files changed, 0 insertions, 27 deletions

diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c
index 94d52c5cf255..9af4f8a57f36 100644
--- a/arch/x86/hyperv/hv_init.c
+++ b/arch/x86/hyperv/hv_init.c
@@ -571,33 +571,6 @@ void hyperv_report_panic(struct pt_regs *regs, long err, bool in_die)
 }
 EXPORT_SYMBOL_GPL(hyperv_report_panic);
 
-/**
- * hyperv_report_panic_msg - report panic message to Hyper-V
- * @pa: physical address of the panic page containing the message
- * @size: size of the message in the page
- */
-void hyperv_report_panic_msg(phys_addr_t pa, size_t size)
-{
-	/*
-	 * P3 to contain the physical address of the panic page & P4 to
-	 * contain the size of the panic data in that page. Rest of the
-	 * registers are no-op when the NOTIFY_MSG flag is set.
-	 */
-	wrmsrl(HV_X64_MSR_CRASH_P0, 0);
-	wrmsrl(HV_X64_MSR_CRASH_P1, 0);
-	wrmsrl(HV_X64_MSR_CRASH_P2, 0);
-	wrmsrl(HV_X64_MSR_CRASH_P3, pa);
-	wrmsrl(HV_X64_MSR_CRASH_P4, size);
-
-	/*
-	 * Let Hyper-V know there is crash data available along with
-	 * the panic message.
-	 */
-	wrmsrl(HV_X64_MSR_CRASH_CTL,
-	       (HV_CRASH_CTL_CRASH_NOTIFY | HV_CRASH_CTL_CRASH_NOTIFY_MSG));
-}
-EXPORT_SYMBOL_GPL(hyperv_report_panic_msg);
-
 bool hv_is_hyperv_initialized(void)
 {
 	union hv_x64_msr_hypercall_contents hypercall_msr;